1 /**************************************************************************
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4 * Author: The ALICE Off-line Project. *
5 * Contributors are mentioned in the code where appropriate. *
7 * Permission to use, copy, modify and distribute this software and its *
8 * documentation strictly for non-commercial purposes is hereby granted *
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11 * appear in the supporting documentation. The authors make no claims *
12 * about the suitability of this software for any purpose. It is *
13 * provided "as is" without express or implied warranty. *
14 **************************************************************************/
17 // Task for selecting D mesons to be used as an input for D-Jet correlations
19 //-----------------------------------------------------------------------
21 // C. Bianchin (Utrecht University) chiara.bianchin@cern.ch
22 // A.Grelli (Utrecht University) a.grelli@uu.nl
23 // Xiaoming Zhang (LBNL) XMZhang@lbl.gov
24 //-----------------------------------------------------------------------
26 #include <TDatabasePDG.h>
27 #include <TParticle.h>
32 #include "AliRDHFCutsDStartoKpipi.h"
33 #include "AliRDHFCutsD0toKpi.h"
34 #include "AliAODMCHeader.h"
35 #include "AliAODHandler.h"
36 #include "AliAnalysisManager.h"
38 #include "AliAODVertex.h"
39 #include "AliAODRecoDecay.h"
40 #include "AliAODRecoCascadeHF.h"
41 #include "AliAODRecoDecayHF2Prong.h"
42 #include "AliESDtrack.h"
43 #include "AliAODMCParticle.h"
44 #include "AliAnalysisTaskSEDmesonsFilterCJ.h"
46 ClassImp(AliAnalysisTaskSEDmesonsFilterCJ)
48 //_____________________________________________________________________________
49 AliAnalysisTaskSEDmesonsFilterCJ::AliAnalysisTaskSEDmesonsFilterCJ() :
58 //fOutputCandidates(0),
66 // Default constructor
69 for (Int_t i=4; i--;) fPDGdaughters[i] = 0;
70 for (Int_t i=30; i--;) fSigmaD0[i] = 0.;
73 //_____________________________________________________________________________
74 AliAnalysisTaskSEDmesonsFilterCJ::AliAnalysisTaskSEDmesonsFilterCJ(const char *name, AliRDHFCuts *cuts, ECandidateType candtype) :
75 AliAnalysisTaskSE(name),
77 fCandidateType(candtype),
84 //fOutputCandidates(0),
92 // Constructor. Initialization of Inputs and Outputs
95 Info("AliAnalysisTaskSEDmesonsFilterCJ","Calling Constructor");
97 for (Int_t i=4; i--;) fPDGdaughters[i] = 0;
98 for (Int_t i=30; i--;) fSigmaD0[i] = 0.;
100 const Int_t nptbins = fCuts->GetNPtBins();
101 Float_t defaultSigmaD013[13] = { 0.012, 0.012, 0.012, 0.015, 0.015, 0.018, 0.018, 0.020, 0.020, 0.030, 0.030, 0.037, 0.040 };
103 switch (fCandidateType) {
105 fCandidateName = "D0";
108 fPDGdaughters[0] = 211; // pi
109 fPDGdaughters[1] = 321; // K
110 fPDGdaughters[2] = 0; // empty
111 fPDGdaughters[3] = 0; // empty
112 fBranchName = "D0toKpi";
115 fCandidateName = "Dstar";
118 fPDGdaughters[1] = 211; // pi soft
119 fPDGdaughters[0] = 421; // D0
120 fPDGdaughters[2] = 211; // pi fromD0
121 fPDGdaughters[3] = 321; // K from D0
122 fBranchName = "Dstar";
125 for (Int_t ipt=0; ipt<nptbins;ipt++) fSigmaD0[ipt] = defaultSigmaD013[ipt];
127 AliFatal(Form("Default sigma D0 not enough for %d pt bins, use SetSigmaD0ForDStar to set them",nptbins));
131 printf("%d not accepted!!\n",fCandidateType);
135 if (fCandidateType==kD0toKpi) SetMassLimits(0.15, fPDGmother);
136 if (fCandidateType==kDstartoKpipi) SetMassLimits(0.015, fPDGmother);
138 DefineOutput(1, TList::Class()); // histos
139 DefineOutput(2, AliRDHFCuts::Class()); // my cuts
142 //_____________________________________________________________________________
143 AliAnalysisTaskSEDmesonsFilterCJ::~AliAnalysisTaskSEDmesonsFilterCJ()
149 Info("~AliAnalysisTaskSEDmesonsFilterCJ","Calling Destructor");
151 if (fOutput) { delete fOutput; fOutput = 0; }
152 if (fCuts) { delete fCuts; fCuts = 0; }
153 if (fCandidateArray) { delete fCandidateArray; fCandidateArray = 0; }
154 //if (fIsSelectedArray) { delete fIsSelectedArray; fIsSelectedArray = 0; }
157 //_____________________________________________________________________________
158 void AliAnalysisTaskSEDmesonsFilterCJ::Init()
164 if(fDebug>1) printf("AnalysisTaskSEDmesonsForJetCorrelations::Init() \n");
166 switch (fCandidateType) {
168 AliRDHFCutsD0toKpi* copyfCutsDzero = new AliRDHFCutsD0toKpi(*(static_cast<AliRDHFCutsD0toKpi*>(fCuts)));
169 copyfCutsDzero->SetName("AnalysisCutsDzero");
170 PostData(2, copyfCutsDzero); // Post the data
173 AliRDHFCutsDStartoKpipi* copyfCutsDstar = new AliRDHFCutsDStartoKpipi(*(static_cast<AliRDHFCutsDStartoKpipi*>(fCuts)));
174 copyfCutsDstar->SetName("AnalysisCutsDStar");
175 PostData(2, copyfCutsDstar); // Post the cuts
183 //_____________________________________________________________________________
184 void AliAnalysisTaskSEDmesonsFilterCJ::UserCreateOutputObjects()
190 Info("UserCreateOutputObjects","CreateOutputObjects of task %s\n", GetName());
193 fOutput = new TList(); fOutput->SetOwner();
194 DefineHistoForAnalysis(); // define histograms
196 //fOutputCandidates= new TList();
197 //fOutputCandidates->SetOwner();
199 fCandidateArray = new TClonesArray("AliAODRecoDecayHF",0);
200 fCandidateArray->SetName(Form("fCandidateArray%s",fCandidateName.Data()));
202 //fOutputCandidates->Add(fCandidateArray);
203 //fIsSelectedArray = new TClonesArray("Int_t",0);
204 //fIsSelectedArray->SetName(Form("fIsSelectedArray%s",suffix.Data()));
205 //fOutputCandidates->Add(fIsSelectedArray);
207 PostData(1, fOutput);
208 //PostData(3, fOutputCandidates);
212 //_____________________________________________________________________________
213 void AliAnalysisTaskSEDmesonsFilterCJ::UserExec(Option_t *)
219 // add cadidate branch
220 fCandidateArray->Delete();
221 if (!(InputEvent()->FindListObject(Form("fCandidateArray%s",fCandidateName.Data())))) InputEvent()->AddObject(fCandidateArray);
224 AliAODEvent *aodEvent = dynamic_cast<AliAODEvent*>(fInputEvent);
226 TClonesArray *arrayDStartoD0pi = 0;
227 if (!aodEvent && AODEvent() && IsStandardAOD()) {
229 // In case there is an AOD handler writing a standard AOD, use the AOD
230 // event in memory rather than the input (ESD) event.
231 aodEvent = dynamic_cast<AliAODEvent*>(AODEvent());
233 // in this case the braches in the deltaAOD (AliAOD.VertexingHF.root)
234 // have to taken from the AOD event hold by the AliAODExtension
235 AliAODHandler *aodHandler = (AliAODHandler*)((AliAnalysisManager::GetAnalysisManager())->GetOutputEventHandler());
236 if(aodHandler->GetExtensions()) {
237 AliAODExtension *ext = (AliAODExtension*)aodHandler->GetExtensions()->FindObject("AliAOD.VertexingHF.root");
238 AliAODEvent *aodFromExt = ext->GetAOD();
239 arrayDStartoD0pi = (TClonesArray*)aodFromExt->GetList()->FindObject(fBranchName.Data());
242 arrayDStartoD0pi = (TClonesArray*)aodEvent->GetList()->FindObject(fBranchName.Data());
245 if (!arrayDStartoD0pi) {
246 AliInfo(Form("Could not find array %s, skipping the event",fBranchName.Data()));
249 AliDebug(2, Form("Found %d vertices",arrayDStartoD0pi->GetEntriesFast()));
252 TClonesArray* mcArray = 0x0;
254 mcArray = dynamic_cast<TClonesArray*>(aodEvent->FindListObject(AliAODMCParticle::StdBranchName()));
256 printf("AliAnalysisTaskSEDStarSpectra::UserExec: MC particles not found!\n");
262 TH1I* hstat = (TH1I*)fOutput->FindObject("hstat");
263 TH2F* hInvMassptD = (TH2F*)fOutput->FindObject("hInvMassptD");
266 if (fCandidateType==kDstartoKpipi) hPtPion = (TH1F*)fOutput->FindObject("hPtPion");
269 // fix for temporary bug in ESDfilter
270 // the AODs with null vertex pointer didn't pass the PhysSel
271 if(!aodEvent->GetPrimaryVertex() || TMath::Abs(aodEvent->GetMagneticField())<0.001) return;
274 Bool_t iseventselected=fCuts->IsEventSelected(aodEvent);
275 //TString firedTriggerClasses=((AliAODEvent*)aodEvent)->GetFiredTriggerClasses();
276 if (!iseventselected) return;
279 const Int_t nD = arrayDStartoD0pi->GetEntriesFast();
282 //Int_t icountReco = 0; // counters for efficiencies
284 //D* and D0 prongs needed to MatchToMC method
285 Int_t pdgDgDStartoD0pi[2] = { 421, 211 }; // D0,pi
286 Int_t pdgDgD0toKpi[2] = { 321, 211 }; // K, pi
289 Int_t pdgdaughtersD0[2] = { 211, 321 }; // pi,K
290 Int_t pdgdaughtersD0bar[2] = { 321, 211 }; // K,pi
293 Int_t isSelected = 0;
294 AliAODRecoDecayHF *charmCand = 0;
296 Int_t mcLabel = -9999;
297 Int_t pdgMeson = 413;
298 if (fCandidateType==kD0toKpi) pdgMeson = 421;
300 for (Int_t icharm=0; icharm<nD; icharm++) { //loop over D candidates
301 charmCand = (AliAODRecoDecayHF*)arrayDStartoD0pi->At(icharm); // D candidates
302 if (!charmCand) return;
305 if (fUseMCInfo) { // Look in MC, try to simulate the z
306 if (fCandidateType==kDstartoKpipi) {
307 AliAODRecoCascadeHF *temp = (AliAODRecoCascadeHF*)charmCand;
308 mcLabel = temp->MatchToMC(413,421,pdgDgDStartoD0pi,pdgDgD0toKpi,mcArray);
311 if (fCandidateType==kD0toKpi) mcLabel = charmCand->MatchToMC(421,mcArray,fNProngs,fPDGdaughters);
313 if (mcLabel<=0) continue;
316 // region of interest + cuts
317 if (!fCuts->IsInFiducialAcceptance(charmCand->Pt(),charmCand->Y(pdgMeson))) continue;
319 isSelected = fCuts->IsSelected(charmCand,AliRDHFCuts::kAll,aodEvent); //selected
320 if (!isSelected) continue;
322 new ((*fCandidateArray)[iCand]) AliAODRecoDecayHF(*charmCand);
323 // new ((*fIsSelectedArray)[iCand]) Int_t(isSelected);
327 Double_t ptD = charmCand->Pt();
328 if (fCandidateType==kDstartoKpipi) { //D*->D0pi->Kpipi
330 //softpion from D* decay
331 AliAODRecoCascadeHF *temp = (AliAODRecoCascadeHF*)charmCand;
332 AliAODTrack *track2 = (AliAODTrack*)temp->GetBachelor();
335 // select D* in the D0 window.
336 // In the cut object window is loose to allow side bands
337 Double_t mPDGD0 = TDatabasePDG::Instance()->GetParticle(421)->Mass();
339 // retrieve the corresponding pt bin for the candidate
340 // and set the expected D0 width (x3)
341 // static const Int_t n = fCuts->GetNPtBins();
342 Int_t bin = fCuts->PtBin(ptD);
343 if(bin<0 || bin>=fCuts->GetNPtBins()) {
344 AliError(Form("Pt %.3f out of bounds",ptD));
348 AliInfo(Form("Pt bin %d and sigma D0 %.4f",bin,fSigmaD0[bin]));
349 if ((temp->InvMassD0()>=(mPDGD0-3.*fSigmaD0[bin])) && (temp->InvMassD0()<=(mPDGD0+3.*fSigmaD0[bin]))) {
350 masses[0] = temp->DeltaInvMass(); //D*
351 masses[1] = 0.; //dummy for D*
354 hInvMassptD->Fill(masses[0], ptD); // 2 D slice for pt bins
356 // D* pt and soft pion pt for good candidates
357 Double_t mPDGDstar = TDatabasePDG::Instance()->GetParticle(413)->Mass();
358 Double_t invmassDelta = temp->DeltaInvMass();
359 if (TMath::Abs(invmassDelta-(mPDGDstar-mPDGD0))<0.0021) hPtPion->Fill(track2->Pt());
363 if (fCandidateType==kD0toKpi) { //D0->Kpi
366 masses[0] = charmCand->InvMass(fNProngs, (UInt_t*)pdgdaughtersD0); //D0
367 masses[1] = charmCand->InvMass(fNProngs, (UInt_t*)pdgdaughtersD0bar); //D0bar
371 if (isSelected==1 || isSelected==3) hInvMassptD->Fill(masses[0],ptD);
372 if (isSelected>=2) hInvMassptD->Fill(masses[1],ptD);
376 } // end of D cand loop
378 //AliDebug(2, Form("Found %i Reco particles that are D*!!",icountReco));
380 //PostData(1,fOutput);
381 //PostData(3,fOutputCandidates);
386 //_____________________________________________________________________________
387 void AliAnalysisTaskSEDmesonsFilterCJ::Terminate(Option_t*)
389 // The Terminate() function is the last function to be called during
390 // a query. It always runs on the client, it can be used to present
391 // the results graphically or save the results to file.
393 Info("Terminate"," terminate");
394 AliAnalysisTaskSE::Terminate();
396 fOutput = dynamic_cast<TList*>(GetOutputData(1));
398 printf("ERROR: fOutput not available\n");
405 //_____________________________________________________________________________
406 void AliAnalysisTaskSEDmesonsFilterCJ::SetMassLimits(Double_t range, Int_t pdg)
409 // AliAnalysisTaskSEDmesonsFilterCJ::SetMassLimits
412 Float_t mass = TDatabasePDG::Instance()->GetParticle(TMath::Abs(pdg))->Mass();
414 // compute the Delta mass for the D*
415 if (fCandidateType==kDstartoKpipi) mass -= TDatabasePDG::Instance()->GetParticle(421)->Mass();
416 //cout << "mass ---------------" << endl;
418 fMinMass = mass - range;
419 fMaxMass = mass + range;
421 AliInfo(Form("Setting mass limits to %f, %f",fMinMass,fMaxMass));
422 if ((fMinMass<0.) || (fMaxMass<=0.) || (fMaxMass<fMinMass)) AliFatal("Wrong mass limits!\n");
427 //_____________________________________________________________________________
428 void AliAnalysisTaskSEDmesonsFilterCJ::SetMassLimits(Double_t lowlimit, Double_t uplimit)
431 // AliAnalysisTaskSEDmesonsFilterCJ::SetMassLimits
434 if (uplimit>lowlimit) {
438 printf("Error! Lower limit larger than upper limit!\n");
439 fMinMass = uplimit - uplimit*0.2;
446 //_____________________________________________________________________________
447 Bool_t AliAnalysisTaskSEDmesonsFilterCJ::SetD0WidthForDStar(Int_t nptbins, Float_t *width)
450 // AliAnalysisTaskSEDmesonsFilterCJ::SetD0WidthForDStar
454 AliInfo("Maximum number of bins allowed is 30!");
458 if (!width) return kFALSE;
459 for (Int_t ipt=0; ipt<nptbins; ipt++) fSigmaD0[ipt]=width[ipt];
465 //_____________________________________________________________________________
466 Bool_t AliAnalysisTaskSEDmesonsFilterCJ::DefineHistoForAnalysis()
469 // AliAnalysisTaskSEDmesonsFilterCJ::DefineHistoForAnalysis
473 TH1I* hstat = new TH1I("hstat","Statistics",4,-0.5,3.5);
474 hstat->GetXaxis()->SetBinLabel(1, "N ev anal");
475 hstat->GetXaxis()->SetBinLabel(2, "N ev sel");
476 hstat->GetXaxis()->SetBinLabel(3, "N cand");
477 hstat->GetXaxis()->SetBinLabel(4, "N cand sel cuts");
479 hstat->GetXaxis()->SetBinLabel(7,"N D");
480 hstat->GetXaxis()->SetBinLabel(8,"N D in jet");
482 hstat->SetNdivisions(1);
485 // Invariant mass related histograms
486 const Int_t nbinsmass = 200;
487 TH2F *hInvMass = new TH2F("hInvMassptD", "D invariant mass distribution", nbinsmass, fMinMass, fMaxMass, 100, 0., 50.);
488 hInvMass->SetStats(kTRUE);
489 hInvMass->GetXaxis()->SetTitle("mass (GeV/c)");
490 hInvMass->GetYaxis()->SetTitle("p_{T} (GeV/c)");
491 fOutput->Add(hInvMass);
493 if (fCandidateType==kDstartoKpipi) {
494 TH1F* hPtPion = new TH1F("hPtPion", "Primary pions candidates pt", 500, 0., 10.);
495 hPtPion->SetStats(kTRUE);
496 hPtPion->GetXaxis()->SetTitle("p_{T} (GeV/c)");
497 hPtPion->GetYaxis()->SetTitle("entries");
498 fOutput->Add(hPtPion);